Home / 2,181.20-3,272.09-948.56

Finding the Fourth Proportional to 2,181.20, 3,272.09 and 948.56

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Solution

The fourth proportional to 2,181.20, 3,272.09 and 948.56 is: 1,422.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.20 : 3,272.09 = 948.56 : x
  2. Step 2: Convert to fraction form
    2,181.20/3,272.09 = 948.56/x
  3. Step 3: Cross multiply
    2,181.20x = 3,272.09 × 948.56
  4. Step 4: Simplify right side
    2,181.20x = 3,103,752.59
  5. Step 5: Solve for x
    x = 3,103,752.59/2,181.20
  6. Step 6: Final answer
    x = 1,422.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.